remoting/host: Fix cpplint warning of header guards.

remoting/host/local_input_monitor_thread_win.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef LOCAL_INPUT_MONITOR_THREAD_WIN_H_
-#define LOCAL_INPUT_MONITOR_THREAD_WIN_H_
+#ifndef REMOTING_HOST_LOCAL_INPUT_MONITOR_THREAD_WIN_H_
+#define REMOTING_HOST_LOCAL_INPUT_MONITOR_THREAD_WIN_H_
+#pragma once
 
 #include <set>
 
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/synchronization/lock.h"
 #include "base/threading/simple_thread.h"
 
 struct SkIPoint;
 
 namespace remoting {
 
 class MouseMoveObserver;
 
 class LocalInputMonitorThread : public base::SimpleThread {
  public:
   static void AddMouseMoveObserver(MouseMoveObserver* mouse_move_observer);
   static void RemoveMouseMoveObserver(MouseMoveObserver* mouse_move_observer);
 
  private:
   LocalInputMonitorThread();
   virtual ~LocalInputMonitorThread();
 
   void AddObserver(MouseMoveObserver* mouse_move_observer);
   bool RemoveObserver(MouseMoveObserver* mouse_move_observer);
 
   void Stop();
-  virtual void Run() OVERRIDE;  // Overridden from SimpleThread.
+
+  // Overridden from base::SimpleThread:
+  virtual void Run() OVERRIDE;
 
   void LocalMouseMoved(const SkIPoint& mouse_position);
   static LRESULT WINAPI HandleLowLevelMouseEvent(int code,
                                                  WPARAM event_type,
                                                  LPARAM event_data);
 
   base::Lock lock_;
   typedef std::set<MouseMoveObserver*> MouseMoveObservers;
   MouseMoveObservers observers_;
 
   DISALLOW_COPY_AND_ASSIGN(LocalInputMonitorThread);
 };
 
 }  // namespace remoting
 
-#endif
+#endif  // REMOTING_HOST_LOCAL_INPUT_MONITOR_THREAD_WIN_H_